# NoiseScope vs Decibel Meter

NoiseScope and Decibel Meter are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. NoiseScope sells 1 one-off in-app purchase and Decibel Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NoiseScope ships an update every 2 months, Decibel Meter every 5 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | NoiseScope | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 7 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tore Bergethon Østensen](https://appshunter.io/developer/1658517230) | [博 彭](https://appshunter.io/developer/1293268076) |

## What reviewers say

### NoiseScope

[App page](https://appshunter.io/ios/app/noisescope/id6755631606)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version | $2.99 | one-time |


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-noisescope/id6760281155)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro永久版 | $1.99 | one-time |


## Frequently asked questions

### Is NoiseScope free?

NoiseScope is free to download, with in-app purchases available.

### Is Decibel Meter free?

Decibel Meter is free to download, with in-app purchases available.

### Do NoiseScope or Decibel Meter have ads?

Neither NoiseScope nor Decibel Meter shows ads.

### Which is updated more often, NoiseScope or Decibel Meter?

NoiseScope ships an update every 2 months, and Decibel Meter every 5 weeks. Most recently, NoiseScope was updated on October 28, 2026 and Decibel Meter on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*